钙钛矿(结构)
串联
材料科学
硅
制作
沉积(地质)
能量转换效率
纳米技术
光电子学
化学工程
复合材料
地质学
医学
古生物学
替代医学
病理
沉积物
工程类
作者
Oussama Er‐raji,Alexander J. Bett,Stefan Lange,H. Nagel,Martin Bivour,O. Schultz-Wittmann,Christian Hagendorf,Martin Hermle,Juliane Borchert,Stefan W. Glunz,Patricia S. C. Schulze
摘要
Abstract Capitalizing on the existing silicon industry, fully textured perovskite‐silicon tandem solar cells have a great potential to penetrate the electricity market. While the use of textured silicon with large pyramid size (> 1 μm) enhances the power conversion efficiency ( PCE ), it also presents process complications. To achieve high performance, meticulous control of deposition parameters on textured silicon is required. This study provides a guideline for the use of the hybrid evaporation/spin‐coating route to form high‐quality perovskite absorbers. Using various characterization techniques, we highlight intrinsic differences between perovskite growth on flat versus textured substrates. Furthermore, we provide pathways to ensure a high perovskite phase purity, reveal mitigation strategies to avoid the formation of undesired dendritic perovskite structures, give guidelines to ensure photostability, and discuss the “misleading” effect of residual PbI 2 on the perovskite photoluminescence response. A good understanding of the perovskite growth on textured silicon enables the fabrication of a tandem device with a PCE > 26% (without employing additives or surface treatments) and a good operational stability. The comprehensive guidelines in this study provide a better understanding of perovskite formation on textured silicon and can be transferred when upscaling the hybrid route perovskite deposition.
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